It's no rumor, just got off the phone with a friend who works for a marketing company that works very closely with Nokia, and apparently this past week Nokia and Microsoft have been having hush hush meetings concerning bringing WP7 to a Nokia phone...3 os's on Nokias is going to be strange indeed.
They're maemo and MeeGo... "Meamo!" sounds like what Zorro would say to catherine zeta jones... after she slaps him for looking at her dirtily...